Of course, you know I’m gonna blog this. Yes, I work at LinkedIn and I’m stoked to see the really hard work many of my colleagues come to fruition.

Web site performance monitor AlertSite tracks site reliability and uptime for social networking sites. This past quarter, LinkedIn came up tops with “near flawless availability” of the site (via PC World):

Delivering near flawless availability (99.97 percent), LinkedIn soared to the top of the rankings after grabbing the #4 spot in the second quarter. While more than 19,000 measurements were recorded during Q3, only six errors were noted.

YouTube came in second, with 99.96 percent availability.

… and looks we came in a close 2nd to Facebook in site response time as well. Impressive!

For the second consecutive quarter, Facebook has proven itself to be the fastest social network, shaving 0.02 seconds off its Q2 average response time to bring its number down to 1 second flat — its lowest quarterly response time recorded this year. YouTube, too, experienced its quickest response times to date in Q3 at 1.60 seconds.

I think this is pretty critical, especially since sites like LinkedIn are becoming essential productivity tools and being up and running could help you, the user, get your job done better and faster. Alright, that’s about it. Now back to regular programming on this blog. Stay tuned.

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My “LinkedIn” twitter search is buzzing with this recent blog post by Tamara of Eventbrite (h/t: All Things Digital), where she compares the ROI on social sharing for their company. Social commerce is a growing phenomenon (think Groupon) but data like this helps marketers understand the true value of incorporating the social graph into their websites. A couple of interesting tidbits from the post:

The growing increase in the effectiveness of sharing on social networking sites – Facebook, LinkedIn and Twitter

When someone shares an event with their friends through social media, this action results in real dollars. Our most recent data shows that over the past 12 weeks, one share on Facebook equals $2.52, a share on Twitter equals $0.43, a share on LinkedIn equals $0.90.

We use a custom suite of social analytics tools that we have developed entirely in-house. Our reporting lets us track and analyze not only which sharing options our users leverage, but where on our site each share action takes place. These tools also tie back into our conversion funnels, so we are able to attribute ticket purchases to the specific social distribution channel that drove them. So, for example, we can compare not just the value created by a Facebook “Like” vs. a tweet, but also the performance of shares initiated before or after a purchase.

“You can see the initial spike in revenue in the graph below. That’s to be expected after distributing a coupon. What we found even more interesting was the “new normal” that resulted. Even after the bump from Groupon, our revenue has leveled off to almost 50% higher than before.”

Of course, Dan works at LinkedIn and was profiled in our Talent series, where we feature employees who do cool stuff outside of their day job at LinkedIn. And, if you haven’t guessed by know, by way of disclosure, I work at LinkedIn.

Are there other studies that compare sharing ROI around? Let me know in the comments section.